PROCESSING VACUUM RESIDUUM AND VACUUM GAS OIL IN EBULLATED BED REACTOR SYSTEMS

摘要

A process for upgrading vacuum residuum and vacuum gas oil hydrocarbons is disclosed. The process may include: contacting a heavy distillate hydrocarbon fraction and hydrogen with a zeolite selective hydrocracking catalyst in a first ebullated bed hydrocracking reaction zone to convert at least a portion of the vacuum gas oil to lighter hydrocarbons. Contacting a residuum hydrocarbon fraction and hydrogen with a non-zeolite base metal hydroconversion catalyst in a second ebullated bed hydroconversion reaction zone may produce a vapor stream containing unconverted hydrogen, acid gases and volatilized hydrocarbons which may be fed along with the vacuum gas oil in the first ebullated bed hydrocracking zone.

主权项

1. A process for upgrading residuum hydrocarbons and heavy distillate feedstocks, the process comprising:
contacting residuum hydrocarbons and hydrogen with a non-zeolitic base metal hydroconversion catalyst in a first ebullated bed hydroconversion reactor system to produce a first effluent; fractionating the first effluent from the first ebullated bed hydroconversion reactor to recover a liquid product and vapor product; contacting the vapor product and a heavy distillate feedstock with a zeolitic selective hydrocracking catalyst in a second ebullated bed hydrocracking reactor system to produce a second effluent; recovering the second effluent from the second ebullated bed hydrocracking reactor system; and fractionating the second effluent from the second ebullated bed hydrocracking reactor system to recover one or more hydrocarbon fractions.